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Historical Values
Year Value
1993 30 km2 (1989 est.)
1994 30 sq km (1989 est.)
1995 30 sq km (1989 est.)
1996 30 sq km (1989 est.)
1997 30 sq km (1993 est.)
1998 30 sq km (1993 est.)
1999 30 sq km (1993 est.)
2000 30 sq km (1993 est.)
2001 30 sq km (1993 est.)
2002 20 sq km (1998 est.)
2003 20 sq km (1998 est.)
2004 20 sq km (1998 est.)
2005 20 sq km (1998 est.)
2006 60 sq km (2003)